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Asset retirement obligations (Narrative) (Details)	6 Months Ended
	Apr. 30, 2014 Y
Asset Retirement Obligations 1	10.00%
Asset Retirement Obligations 2	12

X

- Definition

Asset Retirement Obligations 2

+ References

No definition available.

+ Details

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Namespace Prefix:	lxrp_
Data Type:	xbrli:decimalItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Asset Retirement Obligations 1

+ References

No definition available.

+ Details

Name:	lxrp_AssetRetirementObligationsZeroTwoTwoSixSixZeroLnPQHFiveOnevhSWW
Namespace Prefix:	lxrp_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration